Pen holder



FIG 1 is a top, front, right side perspective view of a pen holder;

FIG. 2 is a top, right side perspective view of the pen holder;

FIG. 3 is a top, rear, right side perspective view of the pen holder;

FIG. 4 is a front, top perspective view of the pen holder;

FIG. 5 is a bottom, rear, right side perspective view of the pen holder;

FIG. 6 is a front elevation view of the pen holder;

FIG. 7 is a rear elevation view of the pen holder;

FIG. 8 is a right side elevation view of the pen holder;

FIG. 9 is a left side elevation view of the pen holder;

FIG. 10 is a top plan view of the pen holder; and,

FIG. 11 is a bottom plan view of the pen holder.

The broken lines represent portions of the pen holder that form no part of the claimed design. 

CLAIM The ornamental design for a pen holder, as shown and described. 